| 摘要 |
A telecommunications system is provided comprising a mobile device and an IP Multi-media Sub-system (IMS), the mobile device being connected to a Public Land Mobile Network, PLMN. The mobile device is adapted to: identify if the PLMN supports Customized Applications for Mobile network Enhanced Logic, CAMEL; and, upon receiving an attempt to initiate a call to a dialled number, if the PLMN supports CAMEL, allow the call to proceed. The PLMN is adapted to: receive a request to connect a call from the mobile device; invoke a CAMEL service trigger indicating that the call should be routed to the IMS; and, route the call to the IMS. The IMS is adapted to: control the call; and, refer the call to a call storage system for call storage. A mobile device, IP Multi-media Sub-system and method in a mobile device are also provided. |
| 主权项 |
1. A telecommunications system for ensuring calls initiated by a mobile device are recordable by a call recording system, the telecommunications system comprising a mobile device and an IP Multi-media Sub-system (IMS), the mobile device being connectable to a Public Land Mobile Network, PLMN, and calls routed through the IMS being referable to the call recording system, wherein:
the mobile device is adapted to:
connect to the PLMN;determine if the PLMN supports Customised Applications for Mobile network Enhanced Logic, CAMEL; andupon receiving an attempt from a user of the mobile device to initiate a call to an intended recipient's number:
if the PLMN supports CAMEL, request the PLMN to connect the call such that the PLMN invokes a CAMEL service trigger indicating that the call be routed to the IMS;otherwise, if the PLMN does not support CAMEL, send to the IMS a data message that includes the intended recipient's number, receive from the IMS a pseudo-roaming number associated with the IMS, and initiate a call to the pseudo-roaming number; andthe IMS is adapted to:
if the PLMN supports CAMEL, receive the call routed from the PLMN and connect the call to the intended recipient's number; otherwise, if the PLMN does not support CAMEL, receive the data message from the mobile device that includes the intended recipient's number, return to the mobile device the pseudo-roaming number associated with the IMS, receive the call initiated by the mobile device to the pseudo-roaming number, and connect the call received from the mobile device to the intended recipient's number so that all calls initiated by the mobile device are routed through the IMS so as to be referable by the IMS to the call storage system for call recording. |
